code: def test_run_wo_folds():
      """[SuperLearner] 'fit' and 'predict' runs correctly without folds."""
  
      with open(os.devnull, "w") as f, redirect_stdout(f):
          ens2.fit(X2, y2)
          pred = ens2.predict(X2)
  
      np.testing.assert_array_equal(pred, G2)
  
file_path: mlens/mlens/ensemble/tests/test_super_learner.py
imports: import numpy
  from mlens.metrics import rmse
  from mlens.utils.exceptions import MetricWarning
  from mlens.index import FoldIndex
  from mlens.testing.dummy import Data, OLS, PREPROCESSING, ESTIMATORS, ECM
  from mlens.ensemble import SuperLearner
  import os
label_desc: Use image node_id 5 for calling a global function with example usage: test_run_wo_folds() without return types